title: Effect of growth-promoting chemicals on growth, nitrogen fixation and heterocyst frequency of a blue-green alga.
abstract: IAA was found to stimulate growth, nitrogen fixation and pigment synthesis in Anabaena doliolum in all concentrations tested. Heterocyst frequency was stimulated up to a concentration of 50 ppm IAA. NAA stimulated growth and nitrogen fixation up to 10 ppm. GA promoted growth, pigment synthesis, heterocyst frequency and nitrogen fixation only up to a concentration of 2 ppm. Kinetin promoted growth up to 100 ppm and synthesis of pigments, while nitrogen fixation was stimulated up to 5 ppm.
mesh_terms: D002734:Chlorophyll / Q000096:biosynthesis; D000458:Cyanobacteria / Q000166:cytology / Q000187:drug effects* / Q000502:physiology; D005875:Gibberellins / Q000494:pharmacology; D007210:Indoleacetic Acids / Q000494:pharmacology; D007701:Kinetin / Q000494:pharmacology; D009280:Naphthaleneacetic Acids / Q000494:pharmacology; D009586:Nitrogen Fixation / Q000187:drug effects; D010937:Plant Growth Regulators / Q000494:pharmacology*
chemical_list: D005875:Gibberellins; D007210:Indoleacetic Acids; D009280:Naphthaleneacetic Acids; D010937:Plant Growth Regulators; D002734:Chlorophyll; C030737:indoleacetic acid; C007842:gibberellic acid; D007701:Kinetin